"The best part about it was, I didn't have to paint anything," he said.

Kickstart Arts said the laneway site was chosen because "thousands of drivers will pass the painting depicting beautiful Tasmanian flora and the Devil, and we are asking them directly to consider their role in preserving this amazing animal".

Project manager Craig Williams said the mural was "about asking people to slow down, from 100 kilometres per hour or 110, to 80," a speed which he said was critical to lessening the numbers hit and killed.

He said car park users would see the devil "vacant" in the mural, on their way out, after which it was hoped "it becomes an incentive for them to adjust their speed on the way home".